Pipe-bending mechanism



E. R. BAILEY AND w. A. McGUlRE PIPE BENDING MECHANISM.

APPLICATION FILED NOV-1'0, 1919.

1,333,369. Patented Mar.9,1920.

3 SHEETSSHEET lywemto v.5

EmilFR. Bailey e a?) eaver A J71? Gui-re E. R. BAILEY AND W. A. MCGUIRE.

PIPE BENDING MECHANISM.

APPLICATION FILED NOV-M11919.

EET 2- Patented Mar.

3 S H E E T 8-8 H Svwemtozs I Emil R. P

E. R. BAILEY AND W. A. McGUlRE.

PIPE BENDING MECHANISM.

APPLICATION man Nov. 10. 1919. 1,333,3 9, I Patented Mar. 9,1920.

3 SHEETSP-SHEET 3 avwma/cou Emil R. pm f YYcavOAM 61b9 2 following is aspe'cification.v

' nary. Thefinvention alsoincludes means for,

v ,mvnnn; narnn jnmiwuaynn ii. mce ma drgqmma, NEBRASKA} T 0 all wkomt may concern? 1 VEAVER .A. MoGUIRmcitizens of the United States, residin at Omaha, in'the county of Douglasand tate of Nebraska, have invented certain new anduseful Improvements 1 in- Pipe-Bending .Mechanism,'-of which the Th s invention-relates to an improvement in pipe-bending mechanism, and has foraits object'to pro'videimeans' whereby pipes of various diameters maybe held more firmly and maybe bent more quickly than ordimaking certain adjustments" so'that pipe dif fering in diameters-may be bent.

ing mechanism, showing'the clamping de- Fig. 2":

is a similia'rviewlto that shown in-Fig. 1, J

Figure l-is aplan vi'ewof pipe-bend,-

vices disen'gag'ed from the pipe.

the clamping devices being. in" engagement wlth a pipe. Fig.3 1s a view in side elevation of the parts shownin l,"the. tables legs beingibroken away: Fig. 4:.is a trans-" verse section through the movable sleeve is abottom' plan viewot the sleeve. Fig. 7 is a top plan view of abase-ring. Figsi 8,

9 and 10 are side viewskof concaved'contact--- plates. Fig. 11' is ,a-sectional-view through. the table on line 11 11 of Fig.1. Fig- 12 is a plan View of the table showing position of parts-when a: pipe. has-been bent.) Figs.

13 and l4'are plan views;ofradjustingplates em-loyed. 1

, eferring'now to the .drawingfor a more particular, description, the 'invention is shown and described-1n connectionwith the conventional, revoluble, vertical-shaft of a I pipe-bending machine, 3 said j shaft having thatthe shaft will have reciprocatory roqtarymotion, its.arcof'movementbeing ap- PirE-BEiwniNe Specificationjofletterslfatenti P gn' dM a plicaticnjaiea-Novmter 'io,j19i9-. :seri i 10,336,787:

catoryrotation ofthe vertical sha t 1 is not considered to be necessary.

For purposes-of the invention we provide a pipie supportingbase-ring a which encircles and] is splined on the shaft andis dislar-in plan for receiving a concaved contactplate 7, or one of the concaved contact-plates 7. 'or 7", as 'may'be required, and depending;

upon'thediaineter of a pipe 8 to be bent.

.--At 9:is indicated a sleeve which is mounted slidably upon the shaft, and on account of I a key-or spline 10 it is adapted to rotate with The invention consists of the novelcon v struction, combination and arrangement of parts as described herein. and claimed, and as illustrated in the accompanying drawing, wherein for receiving one of thecontact-plates "7, 7 or 7", set-screws 13 or equlva'lent members scriptionof.thefmeansfor'causin recipro Be it known that we, EMin R. BAILEY andbeing employed for removablysecuring the contact p lates withintherecesses; 1 At. '12 is indicated-a shaft-extension :for

the shaft -1, which, as best shown in Fig. 5.]

hasraytlireaded terminal'c adaptedv to bemounted inithe threaded aperture dwhich is formed vwlthin and which opens on thejup per end ot said shaftl;".and,at 14 is indicateda hjand leverprovided with a pair. of

acently disposedjaws .15, at its inner end,

tures formed in the head e'of the shaft-extension 12, saidij'aws also havinguniformly curved 'contacttaces .f disposed non-con'cen- ;tr1ew1ththepivotspin 1 a Numerals 1 7 5 indicate slotted coupling -.p lateszwhich are disposed at the'sides of the jaws-l5 which normally "prevent any rotatable r-inovefment of the'shaft-extension 12y independentlyoilt' the sleeve 9,-bolts.orkeeplsleeve and-.enga'gingin the slotsv of the coupling-plates." --As thus described the I sleeve 9 will beundercontrol of the handshown .ingFig: 3.

Numeral. 18 indicates a spool-holding block having a base-plate it formed integral therew1th,a second base-plate h being disposed below and connected with the plate h means of bolts w, said plates being ported and adapted to have a movement in a direction of the sle'eve r reversely, said support being upon a pair ofrgledges 19 which are provided for the table '5; and in order that the spools 20, which are mounted on a pair of bolts-a, may be firmlypressed against a pipe 8, a secondhand-lever 21 hav-" mg a eonvexed terminal is provided, and is pivotally mounted as indicated at 22, be-

tween its ends, upon a stationary plate is of the table. Numeral 23 indicates a link provided with a slot 24:, one of its ends being moiuited, as indicated at m upon a proectlonn whlch 1s provlded for said lever,

the opposite end of: the link being mounted upon and midway between the ends of .a

' rectangular spacing-plate '25, a bolt 26 beers r for engagementlwith the curved termi ing used for this mounting which engages in. the slot. of the-link.- V a The plate 25, as wellas the plates 1 and 25 shown in Figs. 13 and 1 1 arejeach provvided at their outer edge w1th1fr1ction-rollnal of the lever'21 and are also provided near theirimier edges w1th apertures-'8 for receiving bolts 27 for a removable connection with a flange 2?, 11) of theIplate h,-

spools 20 maybe disposed nearer to or farther from the sleeve9,s1nce pipes ofgrea-ten diameter will .require V a greater space when they are placed between the sleeve: and spools than pipes of lesser; diameter.

herein described nechanism'may be quickly and conveniently accomplished; A plate 25 25 01325 being first secured in therposition mentioned, the particular plate 'selected depending upon the diameter of the pipe to be bent; and the plates'r', 7 or 7 being inserted in aperturesia and 1), depending also upon the diameter of said pipe, the

operator, use of the lever let swung to the positionshown in 'Figs. 1 0r 3,'will cause an upward slidalblemovement of the sleeve 9 to permit the pipe to be placed between the concaved contact-plates. The

operator then swings the lever 14 approxi inately 90degrees to the position'shown in Figs. 2 and 5, that part of thefcurved surfaces f farthest from the pivot-pin 16 being in engagement with the top of the sleeve for pressing the pipe between thecontaetplates 7. The operator then, by use of the lever 21, moves the spools 20 into contact with one side of the pipe 8, after which the shaftl moves in anarc, approximately,

'of a half circle, the sleeve 9, base 41, ,7 and ever l lc moving therewith to the position ofparts shown "in .Fig. 12.

Itwilllbe appreciatedthatrapidity in operation is agreat advantage for bending pipes in instances where they may be bent only while maintained at a high degree of heat; also that while being bent the pipes must be firmly clamped or held, and it is considered that the present construction 7 provides these advantages.

What we claim aslnew and desire to se eurebyLettersPatent is, 1. In combination with the table and rev-' oluble shaft of a, pipe-bending machine,

pipe-supporting base-ring splined on the shaft and having an-arm provided with a reoess a sleeve splined, onflthe shaft and having an arm provided with a recess,.con-

tact-plates disposed in said recesses, each having a concaved part, ahand-lever having a pair of jaws pivotally mounted on the shaft and having curvedbearing facesnonconcentric with said pivotal" mounting in engagement with the: sleeve, coupling-plates 1 connecting the'sleeve' with; the jaws of the hand-lever, a spool-holder block on the table, a spacing-plate onthe table reinovably connected with'the, spool-holder block, and

a lever having a pivotal mounting between its ends on the table for moving thespac:

ing-plate and spool-holdingfiblock.

2. Incombination'with the table and revoluble-shaft of a pipe-bending machine, a

vrecess, a sleeve revolulble witlr theshaft and V V r having an arm provided with a recess, con The work of bending pipes'by use of thetaet-plates disposed in said recesses,-a handlever havingapairof jaws pivotally-mounted "on the. shaft and having curved parts noneoncentric with said pivotal mounting forengaging the sleeve, coupling-plates connect; ing thesleeve with the jaws of the handle spacing-plate on the table removably con nected with the spool-holder block and; provided with rollers, a second hand-lever, said second leverhaving a convened terminal and table and arranged to have a swinging move '105 lever, a spool-holder ibl'ocl'r on the table, a v

ment into engagement with the rollers for 1 moving the spacing-plate and spool-holding block, and a slotted link pivotally connected Wlth the second: lever and having a pivotal" mountin on" the s 'acin block;

In testimony whereof, we have aflixed our pivotally mounted between. its ends on the- 

